package com.hmdp.utils;

import lombok.RequiredArgsConstructor;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.stereotype.Component;

import java.time.LocalDateTime;
import java.time.ZoneOffset;
import java.time.format.DateTimeFormatter;



@RequiredArgsConstructor
@Component
public class RedisWorker {
    private static final long BEGIN_TIMESTAMP = 1650000000L;

    private final StringRedisTemplate redisTemplate;
    public long nextId(String keyPrefix){
        //生成时间戳
        LocalDateTime now =LocalDateTime.now();
        long nowSecond = now.toEpochSecond(ZoneOffset.UTC);
        long timeStamp = nowSecond - BEGIN_TIMESTAMP;

        //生成序列号
        String date = now.format(DateTimeFormatter.ofPattern("yyyy:MM:dd"));

        long count = redisTemplate.opsForValue().increment("icr:" + keyPrefix + ":"+ date);

        //拼接返回
        return timeStamp<<32|count;
    }



}
